Oil burner



Aug. 17, 1937. R Fl ANDLER 2,090,567

OIL BURNER Filed Dec. 29, 1936 FIG. 1 *l Y `^INV NTOR. v

54mg( im Patented Aug.. i7, 1937 Parar orrlcE GIL BURNER Robert F. Andler, Rutherford, N. J., assignor to Electrol Incorporated, Clifton, N. J., a corporation of Delaware Application December 29, 1936, Serial No. 118,080

4 Claims. (Cl. 15S- 76) My invention relates to apparatus designed to carry out the improved combustion method described in my copending application Serial No. 118,081, led Dec. 29, 1936.

As described in that application, practice has shown that greater efiiciency, due to more peri'ect combustion, can be attained if the air is formed into an annulus having a gyrating motion imparted to it so that when it is discharged i from the nozzle in an outwardly flaring conoidal annulus, having a gyratlng motion where the oil is sprayed into it, it will be formed a Vortex with the result that a short distance from the nozzle, the whirling mixture will be drawn in- 5 wardly and in this manner produce better combustion.

My invention has for its object to provide a very simple form of apparatus to produce the foregoing desirable result.

My means of accomplishing the foregoing objects may be more fully comprehended by having reference to the accompanying drawing, which is hereunto annexed and is a part of this specication in which:

Fig. 1 is a front elevation of a burner a portion being shown in section;

Fig. 2 is a side view having portions of the outer covering broken away to show the interior construction; and

; Fig. 3 is a detail view of `a modified form of nozzle.

Similar reference.- numerals refer to similar parts throughout the entire specification.

As shown'in the drawing, the electric motor 5 I is directly connected to a blowenfan 2 of standard construction. 'I'he outlet 3 of the blower fan 2 is tangentially connected to a cylindrical chamber sleeve 4. An oil tube 5 extends axially of the chamber 4.

L@ A directional wall 1 is formed in the tangential connection to said chamber which directs the air inlamina, as shown by the arrows in Figs. 1 and 2, against the end wall 8 of the chamber 4 which turns it'so as to cause it to have a gyra--v g5 tory motion while still retaining the form of annulus (clearly seen in Fig. 2) the outer part of which will hug the wall of the chamber 4.

It is important to have the diameter of the chamber sufliciently great so there will be abso- 50 lutely an annulus of air utilizing substantially all of the air currents. At the end of the chamber 4 the Wall I0 is tapered inwardly and forms a truncated cone. Inside of this cone I mount a smaller truncated cone which is spaced from the 55 inwardly extending wall I0. This leaves an annular conoidal space intermediate the two for the passage of the air. This serves to compress the air current forming a vortex at `its center.

The oil is sprayed from the nozzle in a substantially conical spray into the mass leaving the chamber with the result that the oil intersects and mixes with this whirling gyratng current of air and is thoroughly and completely mixed therewith so that when it is ignited, in any of the usual ways used in burners of this type, the flame comes in Contact with the entire surface of each globule of oil because the vortex draws the mixture inwardly as shown by the arrows and in that way complete combustion is attained. In Fig. 3 I have shown a reversed inner conoidal member Il which is mounted upon the oil tube 5. This form is desirable insome cases and operates satisfactorily if proper space is left between the base of thel member Il and the inwardly tapering end wall I0 of the chamber 4.

Having described my invention, what I regard as new and desire to secure by Letters Patent is: 1. In an oil burner, an electric motor, a blower fan driven by said motor, a substantially cylindrical chamber having one end open, conduit means connecting the discharge of the fan tangentially to the said chamber, said conduit means formed to direct the air in a lamina and to cause it to enter the chamber as an annular mass having a gyrating movement, an oil supply tube in said chamber, a nozzle on said tube discharging the oil in a spray beyond the open end of saidchamber, the open end of said chamber being formed by an inwardly tapering truncated cone, an inner cone spaced from the rst cone to provide an annular space intermediate sa'id cones whereby the gyrating mass of air is discharged from the chamber and forms a vortex .into which the oil is sprayed.

2. In an oil burner, an electric motor, a blower fan driven by Ysaid motor, a substantially cylindrical chamber having one end open, conduit means connecting the discharge of the fan tangentially to the said` chamber, said conduit means formed to direct the air in a lamina and to cause it to enter the chamber as an annular mass having a gyrating movement, an oil supply tube in said chamber, a nozzle on said tube discharging the oil in a spray beyond the end of said chamber, the open end of saidy chamber tapering inwardly, an outwardly iiaring conoidal member mounted on said oil tube adjacent the inwardly tapering portion of said chamber, the edge of the base of said member being spaced from the inwardly tapering wall to provide an annular space intermediate said wall and said member v whereby .the gyrating mass of air is discharged from the chamber and forms a vortex into which the oil is sprayed.

3. In an oil burner, an electric motor, a blower fan driven by said motor, a substantially cylindrical chamber having one end open, conduit means connecting the discharge of the fan tangentially to the said chamber, said conduit means formed to direct the air in a lamina and to cause it to enter the chamber as an annular mass having a gyrating movement, an oil supply tube in said chamber, a nozzle on said tube discharging the oil in a spray beyond the open end of said chamber, the open end of said chamber being formed by an inwardly tapering wall, an inner cone mounted on said oil tube, said cone tapering'inwardly toward the discharge end of said said chamber, a nozzle on said tube dischargingA the oil in a spray beyond the open end of said chamber, the open end of said chamber being formed by an inwardly tapering wall, an inner cone mounted on said'oil tube, said cone tapering inwardly away from the discharge end 0f said chamber, said cone being spaced from the inwardly tapering wall to provide an annular space intermediate said cone and said wall, whereby the gyrating mass of air is discharged from the chamber and forms a vortex into which the oil i is sprayed.

ROBERT F. ANDLER. 

